Growing community of inventors

Dormagen, Germany

Friedrich Lehmann

Average Co-Inventor Count = 4.00

ph-index = 1

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 8

Friedrich LehmannDietmar Kallinich (1 patent)Friedrich LehmannHeinz Wind (1 patent)Friedrich LehmannWolfgand Kahlert (1 patent)Friedrich LehmannFriedrich Lehmann (1 patent)Dietmar KallinichDietmar Kallinich (3 patents)Heinz WindHeinz Wind (2 patents)Wolfgand KahlertWolfgand Kahlert (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Philipp Holzmann Aktiengesellschaft (1 from 17 patents)

2. Flachglas Consult Gmbh (1 from 1 patent)


1 patent:

1. 5186217 - Fluid-impervious structure and method of making same

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